/*=============================================================================
    Spirit v1.6.0
    Copyright (c) 2001-2003 Joel de Guzman
    http://spirit.sourceforge.net/

    Permission to copy, use, modify, sell and distribute this software is
    granted provided this copyright notice appears in all copies. This
    software is provided "as is" without express or implied warranty, and
    with no claim as to its suitability for any purpose.
=============================================================================*/
#ifndef BOOST_SPIRIT_PARAMETRIC_HPP
#define BOOST_SPIRIT_PARAMETRIC_HPP

///////////////////////////////////////////////////////////////////////////////
#include "boost/spirit/core/parser.hpp"
#include "boost/spirit/core/composite/composite.hpp"
#include "boost/spirit/core/primitives/primitives.hpp"

namespace boost { namespace spirit {

    ///////////////////////////////////////////////////////////////////////////
    //
    //  f_chlit class [ functional version of chlit ]
    //
    ///////////////////////////////////////////////////////////////////////////
    template <typename ChGenT>
    struct f_chlit : public char_parser<f_chlit<ChGenT> >
    {
        f_chlit(ChGenT chgen_)
        : chgen(chgen_) {}

        template <typename T>
        bool test(T ch) const
        { return ch == chgen(); }

        ChGenT   chgen;
    };

    template <typename ChGenT>
    inline f_chlit<ChGenT>
    f_ch_p(ChGenT chgen)
    { return f_chlit<ChGenT>(chgen); }

    ///////////////////////////////////////////////////////////////////////////
    //
    //  f_range class [ functional version of range ]
    //
    ///////////////////////////////////////////////////////////////////////////
    template <typename ChGenAT, typename ChGenBT>
    struct f_range : public char_parser<f_range<ChGenAT, ChGenBT> >
    {
        f_range(ChGenAT first_, ChGenBT last_)
        : first(first_), last(last_)
        {}

        template <typename T>
        bool test(T ch) const
        {
            BOOST_SPIRIT_ASSERT(first() <= last());
            return (ch >= first()) && (ch <= last());
        }

        ChGenAT first;
        ChGenBT last;
    };

    template <typename ChGenAT, typename ChGenBT>
    inline f_range<ChGenAT, ChGenBT>
    f_range_p(ChGenAT first, ChGenBT last)
    { return f_range<ChGenAT, ChGenBT>(first, last); }

    ///////////////////////////////////////////////////////////////////////////
    //
    //  f_chseq class [ functional version of chseq ]
    //
    ///////////////////////////////////////////////////////////////////////////
    template <typename IterGenAT, typename IterGenBT>
    class f_chseq : public parser<f_chseq<IterGenAT, IterGenBT> >
    {
    public:

        typedef f_chseq<IterGenAT, IterGenBT> self_t;

        f_chseq(IterGenAT first_, IterGenBT last_)
        : first(first_), last(last_) {}

        template <typename ScannerT>
        typename parser_result<self_t, ScannerT>::type
        parse(ScannerT const& scan) const
        {
            typedef typename parser_result<self_t, ScannerT>::type result_t;
            return impl::string_parser_parse<result_t>(first(), last(), scan);
        }

    private:

        IterGenAT first;
        IterGenBT last;
    };

    template <typename IterGenAT, typename IterGenBT>
    inline f_chseq<IterGenAT, IterGenBT>
    f_chseq_p(IterGenAT first, IterGenBT last)
    { return f_chseq<IterGenAT, IterGenBT>(first, last); }

    ///////////////////////////////////////////////////////////////////////////
    //
    //  f_strlit class [ functional version of strlit ]
    //
    ///////////////////////////////////////////////////////////////////////////
    template <typename IterGenAT, typename IterGenBT>
    class f_strlit : public parser<f_strlit<IterGenAT, IterGenBT> >
    {
    public:

        typedef f_strlit<IterGenAT, IterGenBT> self_t;

        f_strlit(IterGenAT first, IterGenBT last)
        : seq(first, last) {}

        template <typename ScannerT>
        typename parser_result<self_t, ScannerT>::type
        parse(ScannerT const& scan) const
        {
            typedef typename parser_result<self_t, ScannerT>::type result_t;
            return impl::contiguous_parser_parse<result_t>
                (seq, scan, scan);
        }

    private:

        f_chseq<IterGenAT, IterGenBT> seq;
    };

    template <typename IterGenAT, typename IterGenBT>
    inline f_strlit<IterGenAT, IterGenBT>
    f_str_p(IterGenAT first, IterGenBT last)
    { return f_strlit<IterGenAT, IterGenBT>(first, last); }

}} // namespace boost::spirit

#endif
